Circuit Breaker 30172-30 Equivalent & Substitute Parts

Part Overview

The Littelfuse 30172-30 is a 30A 24V DC automatic reset circuit breaker designed for chassis mount applications in the 813 series. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The part operates as a single-pole protective device with automatic reset functionality, suitable for DC circuit protection in industrial and electronic applications.

Substiute Parts

30172-30

Littelfuse Inc.In Stock: 95230172-30 Datasheet

Current PartRFQ

ACBP-V-30A

OptiFuseIn Stock: 744ACBP-V-30A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 30172-30 is determined by the following critical parameters:

• Current Rating: 30A (exact match required)
• Voltage Rating - DC: 24V minimum (higher ratings acceptable for DC applications)
• Actuator Type: Automatic Reset (functional requirement)
• Number of Poles: 1 (circuit configuration requirement)
• Mounting Type: Chassis Mount (physical installation requirement)

The OptiFuse ACBP-V-30A qualifies as a direct substitute based on matching current rating (30A), automatic reset functionality, single-pole configuration, and chassis mount capability. The substitute part operates at 32V DC, which exceeds the 24V requirement and is acceptable for DC circuit protection applications where higher voltage tolerance provides operational margin.

Parameter Comparison

Engineering Selection Recommendations

The OptiFuse ACBP-V-30A (Base Product Number: ACBP-V) is the qualified substitute for the obsolete Littelfuse 30172-30. Selection is based on:

• Exact current rating match at 30A
• Voltage rating of 32V DC exceeds the 24V requirement, providing operational compatibility
• Identical automatic reset and single-pole configuration
• Active product status ensures availability and supply chain continuity
• ROHS3 compliance meets current regulatory requirements
• Approval certifications include IP 63, SAE J1171, and SAE J553

The substitute part is supplied in bulk packaging with 710 units available in new original stock condition.

Frequently Asked Questions (FAQ)

Q: Can the OptiFuse ACBP-V-30A operate in a 24V DC circuit designed for the Littelfuse 30172-30?

A: Yes. The ACBP-V-30A is rated for 32V DC operation, which is compatible with 24V DC circuits. The higher voltage rating does not affect performance in lower voltage applications.

Q: Are the mounting dimensions identical between the two parts?

A: Both parts are specified as chassis mount. Physical verification of mounting hole spacing and form factor is required during integration, as detailed mechanical drawings are not provided in the parameter set.

Q: What is the difference between the standard breaker type and the Shortstop breaker type?

A: The Shortstop designation indicates the breaker type for the OptiFuse part. Both parts function as automatic reset circuit breakers at 30A. Specific operational differences are not defined in the provided parameters.

Q: Does the RoHS compliance difference affect substitution?

A: The OptiFuse ACBP-V-30A is ROHS3 compliant, while the Littelfuse 30172-30 is RoHS non-compliant. For new designs and systems requiring RoHS compliance, the substitute part meets current regulatory standards. For legacy system maintenance, compliance requirements depend on application and regional regulations.

Q: Is the ACBP-V-30A available in packaging other than bulk?

A: The provided inventory data specifies bulk packaging for the ACBP-V-30A. Alternative packaging availability should be confirmed with the supplier.